I don’t like to watch movies with blasphemy (i.e. what I consider blasphemy by my standards).
I don’t mind movies with non-blasphemous swear words, if they fit the characters who are speaking. I am aware of people who use certain swear words like normal parts of speech. Sometimes I swear myself in a non-blasphemous way. Some people hate swearing, and hopefully the people would not talk like that in a situation requiring more formal or polite speech (I’m quite capable of controlling my speech), but let’s face it, if you have a movie full of gangsters they are not going to sit around talking like they’re having tea with the Queen.
The whole “should WE” watch this or that implies there’s one universal set of standards for all. In reality, there isn’t. Many movies out there are fine for mature adults and film buffs but would be totally inappropriate for an impressionable teenager or for Family Movie Night.